=== HTTP code : 200 ===

HTTP/1.1 200 OK
Server: nginx/1.4.6 (Ubuntu)
Date: Tue, 07 Apr 2015 04:58:13 GMT
Content-Type: application/pdf
Content-Length: 494040
Last-Modified: Mon, 23 Feb 2015 22:11:22 GMT
Connection: close
ETag: "54eba58a-789d8"
Accept-Ranges: bytes


Link is valid.